25406265 has 32 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 13063680.

The previous prime is 25406231. The next prime is 25406357. The reversal of 25406265 is 56260452.

It is not a de Polignac number, because 25406265 - 2⁷ = 25406137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66846 + ... + 67224.

It is an arithmetic number, because the mean of its divisors is an integer number (1316700).

Almost surely, 2^25406265 is an apocalyptic number.

It is an amenable number.

25406265 is a deficient number, since it is larger than the sum of its proper divisors (16728135).

25406265 is a wasteful number, since it uses less digits than its factorization.

25406265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 25406265 is about 5040.4627763728. The cubic root of 25406265 is about 293.9771720903.

The spelling of 25406265 in words is "twenty-five million, four hundred six thousand, two hundred sixty-five".